exam Maths Puzzle Numerical Ability

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Graph y=3/4*x-4

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exam Other Question

Simplify

A^3*(c^2m)^x*a^x/2

DIVIDED BY

c^mx/3 If a skydiver jumps from an airplane at a height of 8256 feet, then for the first 5 seconds, her height above the earth is approximated by the formula: h=-t^2+8256 . How many seconds does it take her to reach 8000 feet?